【法】 arbitrary arrest; arrest without a warrant; make unwarranted arrest

擅自的英語翻譯：

do sth. without authorization; make bold to; presume
【經(jīng)】 without authorization

逮捕的英語翻譯：

arrest; apprehend; nab; seize; apprehension; arrestment
【法】 appehension; apprehend; arrest; arrest without a warrant; arrestment
arret; attach; attachment; attacing; claw; lay by the heels; nab; rap
seize; take in charge; take into custody; take up